new Vue({
el: '#app',
data: {
classObject: {
active: true,
'text-danger': false
}
}
})
<div id="app">
<div v-bind:class="classObject"></div>
</div>
.active {
width: 100px;
height: 100px;
background: green;
}
.text-danger {
background: red;
}